Combined inhibition of EZH2 and CDK4/6 perturbs endoplasmic reticulum-mitochondrial homeostasis and increases antitumor activity against glioblastoma.


Journal

NPJ precision oncology
ISSN: 2397-768X
Titre abrégé: NPJ Precis Oncol
Pays: England
ID NLM: 101708166

Informations de publication

Date de publication:
25 Jul 2024
Historique:
received: 10 01 2024
accepted: 11 07 2024
medline: 26 7 2024
pubmed: 26 7 2024
entrez: 25 7 2024
Statut: epublish

Résumé

He, we show that combined use of the EZH2 inhibitor GSK126 and the CDK4/6 inhibitor abemaciclib synergistically enhances antitumoral effects in preclinical GBM models. Dual blockade led to HIF1α upregulation and CalR translocation, accompanied by massive impairment of mitochondrial function. Basal oxygen consumption rate, ATP synthesis, and maximal mitochondrial respiration decreased, confirming disrupted endoplasmic reticulum-mitochondrial homeostasis. This was paralleled by mitochondrial depolarization and upregulation of the UPR sensors PERK, ATF6α, and IRE1α. Notably, dual EZH2/CDK4/6 blockade also reduced 3D-spheroid invasion, partially inhibited tumor growth in ovo, and led to impaired viability of patient-derived organoids. Mechanistically, this was due to transcriptional changes in genes involved in mitotic aberrations/spindle assembly (Rb, PLK1, RRM2, PRC1, CENPF, TPX2), histone modification (HIST1H1B, HIST1H3G), DNA damage/replication stress events (TOP2A, ATF4), immuno-oncology (DEPDC1), EMT-counterregulation (PCDH1) and a shift in the stemness profile towards a more differentiated state. We propose a dual EZH2/CDK4/6 blockade for further investigation.

Identifiants

pubmed: 39054369
doi: 10.1038/s41698-024-00653-3
pii: 10.1038/s41698-024-00653-3
doi:

Types de publication

Journal Article

Langues

eng

Pagination

156

Informations de copyright

© 2024. The Author(s).

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Auteurs

Thomas Freitag (T)

Department of Medicine, Clinic III -Hematology, Oncology, Palliative Medicine, Rostock University Medical Center, University of Rostock, Rostock, Germany.

Philipp Kaps (P)

Department of Medicine, Clinic III -Hematology, Oncology, Palliative Medicine, Rostock University Medical Center, University of Rostock, Rostock, Germany.

Justus Ramtke (J)

Department of Medicine, Clinic III -Hematology, Oncology, Palliative Medicine, Rostock University Medical Center, University of Rostock, Rostock, Germany.

Sarah Bertels (S)

Department of Medicine, Clinic III -Hematology, Oncology, Palliative Medicine, Rostock University Medical Center, University of Rostock, Rostock, Germany.

Emily Zunke (E)

Department of Medicine, Clinic III -Hematology, Oncology, Palliative Medicine, Rostock University Medical Center, University of Rostock, Rostock, Germany.

Björn Schneider (B)

Institute of Pathology, Rostock University Medical Center, University of Rostock, Rostock, Germany.

Anne-Sophie Becker (AS)

Institute of Pathology, Rostock University Medical Center, University of Rostock, Rostock, Germany.

Dirk Koczan (D)

Department of Immunology, Rostock University Medical Center, University of Rostock, Rostock, Germany.

Daniel Dubinski (D)

Department of Neurosurgery, Rostock University Medical Center, University of Rostock, Rostock, Germany.

Thomas M Freiman (TM)

Department of Neurosurgery, Rostock University Medical Center, University of Rostock, Rostock, Germany.

Felix Wittig (F)

Institute of Pharmacology and Toxicology, Rostock University Medical Center, University of Rostock, Rostock, Germany.

Burkhard Hinz (B)

Institute of Pharmacology and Toxicology, Rostock University Medical Center, University of Rostock, Rostock, Germany.

Mike-Andrew Westhoff (MA)

Department of Pediatrics and Adolescent Medicine, University Medical Center Ulm, Ulm, Germany.

Hannah Strobel (H)

Department of Pediatrics and Adolescent Medicine, University Medical Center Ulm, Ulm, Germany.

Franziska Meiners (F)

Institute for Biostatistics and Informatics in Medicine and Aging Research (IBIMA), Rostock University Medical Center, University of Rostock, Rostock, Germany.

Daniel Wolter (D)

Department of Oral and Maxillofacial Surgery, Facial Plastic Surgery, Rostock University Medical Center, University of Rostock, Rostock, Germany.

Nadja Engel (N)

Department of Oral and Maxillofacial Surgery, Facial Plastic Surgery, Rostock University Medical Center, University of Rostock, Rostock, Germany.
Oscar Langendorff Institute of Physiology, Rostock University Medical Center, University of Rostock, Rostock, Germany.

Sascha Troschke-Meurer (S)

Department of Pediatric Oncology and Hematology, University Medicine Greifswald, Greifswald, Germany.

Wendy Bergmann-Ewert (W)

Core Facility for Cell Sorting & Cell Analysis, Laboratory for Clinical Immunology, Rostock University Medical Center, University of Rostock, Rostock, Germany.

Susanne Staehlke (S)

Institute for Cell Biology, University Medical Center Rostock, Rostock, Germany.

Annabell Wolff (A)

Department of Medicine, Clinic III -Hematology, Oncology, Palliative Medicine, Rostock University Medical Center, University of Rostock, Rostock, Germany.

Florian Gessler (F)

Department of Neurosurgery, Rostock University Medical Center, University of Rostock, Rostock, Germany.

Christian Junghanss (C)

Department of Medicine, Clinic III -Hematology, Oncology, Palliative Medicine, Rostock University Medical Center, University of Rostock, Rostock, Germany.

Claudia Maletzki (C)

Department of Medicine, Clinic III -Hematology, Oncology, Palliative Medicine, Rostock University Medical Center, University of Rostock, Rostock, Germany. claudia.maletzki@med.uni-rostock.de.

Classifications MeSH